How about this link? We were talking in August about you getting a Zygopetalum, right? I am curious, why a Zygo?
http://www.guide-to-houseplant...
And another
http://www.beautifulorchids.co...
Reading your description of your lighting makes me blink!
If I may? I wouldn't overthink it. Ditto for the temperature. There is no spot in nature that accurate.
It would be lovely if you were to get a plant in bloom and you could just enjoy it?